feat: add buffer system

lua/chai/buffers.lua

@@ -0,0 +1,56 @@
+-- buffers API, loads buffers from ./buffers/*.lua
+
+local M = {}
+
+local buffers = {}
+
+function M.setup()
+    -- Init stuff
+end
+
+-- should return created chai buffer
+local function resolve_buffer_path(path)
+    if string.match(path, '^chai://test/?$') then
+        local buffer = vim.deepcopy(require('chai.buffers.test'))
+        buffer.args = {}
+
+        return buffer
+    end
+
+    -- user is idiot imbecyle etc
+    error("Invalid path " .. path)
+end
+
+function M.create_buffer(buffer)
+    buffers[buffer] = resolve_buffer_path(vim.api.nvim_buf_get_name(0))
+    if type(buffers[buffer].init) == 'function' then
+        buffers[buffer].init(buffer)
+    end
+end
+
+function M.destroy_buffer(buffer)
+    if type(buffers[buffer].destroy) == 'function' then
+        buffers[buffer].destroy(buffer)
+    end
+    buffers[buffer] = nil
+end
+
+function M.on_hide(buffer)
+    if type(buffers[buffer].on_hide) == 'function' then
+        buffers[buffer].on_hide(buffer)
+    end
+end
+
+function M.on_enter(buffer)
+    if type(buffers[buffer].on_enter) == 'function' then
+        buffers[buffer].on_enter(buffer)
+    end
+end
+
+function M.on_write(buffer)
+    if type(buffers[buffer].on_write) == 'function' then
+        buffers[buffer].on_write(buffer)
+    end
+end
+
+return M